property 100% for me, don't know about england and all but here in cornwall with cash there are some stunning deals to be had.
Property is a very il-liquid asset, coupled with high entry and exit fees (solicitors,stamp duty and agents) make it a very long term investment IMO. Unless the OP found a house he wanted to live in when he gets back from overseas, I wouldn't be tying that amount of money up in property for anything less than 10 years (planned, sometimes sh1t happens hand you have to liquidate before you planned)
Shares are also a bit risky over a one year period, also, IMO. Big set of kahunas that can drop 100k into shares in one to go, drip feeding in minimises the risk.
If the OP definitely wants access to the money in 1 year I reckon you'll have to take the hit on misery interest rates paid on cash accounts. All depends on the personal circumstances, I guess